Specification:SH201:Model: SH201Product material: PC/ABSProduct color: silver black/yellow blackProduct size: 17.2*7.6*3.7cmPacking size: 19*8.3*5cmProduct gro weight 2gProduct net weight 160g: range: 19-51mmDetected metal size: 60mmAlarm Mode: BeepBattery type: 9V battery(shipped without battery)SH301:Model: SH301Product material: PC/ABSProduct color: whiteProduct size: 17.4*7.7*3.6cmColor box size: 18.1*9.2*5cmProduct net weight: 160gProduct gro weight: 210gAlarm Mode: BeepBattery type: 9V battery(shipped without battery)SH401:Model: SH401Product material: PC/ABSProduct color: grayProduct size: 17.1*7*3.5cmColor box size: 18.1*9.2*5cmProduct net weight: 170gProduct gro weight: 220gAlarm Mode: BeepBattery type: 9V dry battery(shipped without battery)Display: LED liquid crystal green backlit screenFeature:SH201:1. Use upgraded internal sensors. It senses changes in the density of the space behind the wall and can locate the stud center very accurately. also. The shape of this wall scanner also shows the edges of the studs. The center of the stud is the safest location when installing anything heavy. Edges help you recheck the position. Bring it home and make your DIY homework easier!2. Scan mode up to 60mm deep - The stud locator is versatile enough to quickly and easily locate wood metal studs, joists, metal tube rebar and live AC wires behind walls, floors and ceilings. Studs can be pattern scanned through a layer of drywall up to 0.75". (19mm). Deeps can pattern scan through 2 layers of drywall up to 1.5 inches. (38 mm) deep. The deep stud scan mode is a higher sensitivity scan mode and should be used when there are additional layers of wallboard.3. Wire warning indicator, don't worry about ing into live wires - wire warning up to 2 inches. (51 mm) deep. As an added bonus, wire warning is always on when you scan in StudScan/DeepScan/MetalScan mode to alert you to the presence of up to 2 inches of live, unshielded AC wire. (mm) deep, which helps avoid ing or hammering water pipes or wires.4. At the same time, the LCD display can also easily display the required large stud and the position of the large stud, and display the exact position of the stud. When material is found, the LCD display will indicate the direction and the intensity of the beep will tell you if you are getting closer to the target. The quick saves the user a lot of time.5.MOCITA has been working on the research and development of stud locator for many years, we have a profeional team and mature production proce. Not only provides you with high quty and high precision, but also provides a variety of functions to meet your actual needs for drywall, lathe wall, ceiling, drywall, wallboard and more.SH301:1. Use upgraded internal sensors. It senses changes in the density of the space behind the wall and can locate the stud center very accurately.2. Powerful to quickly and easily locate wood metal studs, joists, metal pipe rebar and live AC wires behind walls, floors and ceilings.3. The design of the alarm allows you to know the situation of the wall at all times, making the operation more accurate4. The wall detector can clearly identify what objects are inside the wall, which is more intuitive and accurate. Wood , metal , electric current .5. Wide range of adaptations, using upgraded internal sensors. It senses changes in the density of the space behind the wall and can locate the stud center very accurately.SH401:1. The new 5-in-1 design is more powerful, more accurate, and lasts longer.2. This product quickly and easily locates wood metal studs, joists, metal pipe rebar and live AC wires behind walls, floors and ceilings.3. The design of the alarm allows you to know the situation of the wall at all times, making the operation more accurate.4. The SH401 wall detector can clearly identify what objects are inside the wall, which is more intuitive and accurate. Wood , metal , electric current .5. A wide range of adaptations, as long as you want to view the interior of opaque objects, you can use it.6. Use upgraded internal sensors. It senses changes in the density of the space behind the wall and can locate the stud center very accurately.Package Included:SH201 detector + manualorSH301 detector + manualorSH401 detector + manual